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Fun-info

Fun-infop

Recognizer for fun-info structures.

Signature
(fun-infop x) → *

Definitions and Theorems

Function: fun-infop

(defun fun-infop (x)
  (declare (xargs :guard t))
  (let ((__function__ 'fun-infop))
    (declare (ignorable __function__))
    (and (mbe :logic (and (alistp x)
                          (equal (strip-cars x)
                                 '(params result body)))
              :exec (fty::alist-with-carsp x '(params result body)))
         (b* ((params (cdr (std::da-nth 0 x)))
              (result (cdr (std::da-nth 1 x)))
              (body (cdr (std::da-nth 2 x))))
           (and (param-declon-listp params)
                (tynamep result)
                (block-item-listp body))))))

Theorem: consp-when-fun-infop

(defthm consp-when-fun-infop
  (implies (fun-infop x) (consp x))
  :rule-classes :compound-recognizer)